Spring binding-post.



H. G. MARTIN.

SPRING BINDING POST.

APPLICATION FILED 001 .27. 1905.

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PATENTED NOV. 19, 1907.

Rutherford new and useful Improvements in UNITED STATES PATENT OFFICE.

HORACE G, MARTIN, OF RUTHERFORD, NEW JERSEY.

SPRING BINDING-POST.

. Specification of Letters Patent. l

" Patented Nov. 19, 1907.

Application filed October 27. 1905. Serial No. 284.600.

To all whom it may concern:

Be it known that I, HORA E G. MARTIN, a citizen of the United States/residing at in the county of Ber en and certain Spring of which the following'is a reference being bad to the panying and forming part of State of New Jersey, have inventetf lurin as on a movin vehicle. The shakh! a mg or jarring frequently loosens a screw binding post, whereas-with my device the. pressure on the wire is constant, due to the yielding nature of the parts which gripthe wire.

The object of my invention is to provide a device of this-character which shall be simple and effective, and withal inexpensive to manufacture.

The nature of the invention will be more readily understood from a detailed descrip tion of the preferred embodiment. The same is illustrated in the accompanying drawing, in which Figure 1 shows the device in elevation, with a ,wire in position therein, Fig. .2 is a perspective view of the body of the device,

. and Fig. 3 is a perspective view of the movable stop.

The body of the binding post, in the preferred form, consists of a base part 1 forated as at '2, to receive a screw, by which it may be fastened in placewhenever it is to housed. Extending upward from the base a standard 3, perforated near its top, as at 4, to receive the wire or other conductor. At the top aretwo upwardly extending studs or fingers, 5, one at each edge. Fig. 3 is a perspective view of the movable stop. it consists of a central part ti, llitVlllfQ' wings or finger pieces 7 at diametrically opposite sides thereof, and preferably bent. downward, as shown. At the center of t he stop is a longitudinal slot 8, sommvhat larger than the cross section of the post. or standard 1;, so

that. the stop can move freely up and down thereon.

l l l l l l i j l l i i l 1 The device is assembled as follows. Over the post or standard is placed a coil spring 9, of the desired degree of stiffness. The stop 6' is then placed on the standard-and pressed down against the tension of the spring, whereupon the fingers or studs 5 are bent outward, as shown in Fig. 1. The device is then complete, the outstanding studs preventing the stop from being forced off the standardby the spring. To insert the conductor the stop is pressed down by placing the fingerson tion 4 is exposed.

T 1e wire or terminal is then inserted, and the stop released. The latter is pressed by the spring firmly against the conductor and holds the same securely, with good electrical contact.

The device can be made very cheaply.

The body part is madeby stam ing from sheet brass a blank of the proper form, that is, having a body part to serve as the base, 1, and a tongue'extending from one side of the same to serve as the standard 3. The blank is then bent at right angles, the bend preferably being made within the body or base portion so as to leave shoulders 10 on each side of the standard. vide substantial bearings'for the spring, and support it on each side in an effective manner. The dies for stain ing the blank may be constructed alsoto 'orm the studs 5 at the end of the tongue or post and the perforations 2 and 4! The stop may also be stamped from sheet metal, the slot to receive the standard 3 preferably being punched out at the same time. The ends of the blank may then be bent to form the tinger pieces 7.

It will be understood of course that all the o ierations, of forming the body member shown in Fig. 2 and the movable stop shown in Fig. 3 may be performed by automatic machines. A number of machines capable of performing these operations are already well known in the art ofsheet metal working. The device can-therefore be manufactured at very slight expense, but is nevertheless entirely effective for its purpose.

Us is to be understood that the form herein. specifically shown and described may be modified considerably without departure from the proper scope. of the invention as defined by the following claims.

I. A spring binding post comprising, in combination, a base member havin a standard extending from one side thereof and perthe win s 7, until the perfora- These shoulders proforated near its top, a stop movable freely on the standard and providedwith out. Wardly extending finger pieces, a spring intertnediate to the base and the stop, and means at the top of the standard to prevent the stop from being disengaged, therefrom, as set forth.

2. A spring binding post comprisin in combination, a perforatedbase member aving shoulders at one side, a standard rising from between the shoulders, thestandard being perforated near its top, with outwardly extending studs adjacent thereto, a stop having a slot to receive the standard, said stop being movable freely thereon and pro- 15 videdv with outwardly extending finger pieces, and a c-oilsprin around the standard between the said shou ders and the stop, as

set forth,

HORACE G. MARTIN.

W'itn'esses:

JoHN C. KERR,

M. LAWSON DYER' 

